Scan Setting Modes; Important Facts About Scan Settings - Canon CanoScan FS4000US User Manual

Adjusting the Scan Settings

Scan Setting Modes

Once you have previewed and inspected the images, you can set the scan settings for specific
purposes. These settings use the modes in the scan settings section, and set how finely to scan the
image, the purpose for which the scanned image will be used, the image size and so on.
• You can set the scan settings independently for each frame which has a preview image.
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• If you have made a thumbnail scan, you can set the same scan settings for all images.
• If you do not adjust the scan settings, the image will be scanned at the previously set settings.

Important Facts about Scan Settings

The input resolution, output resolution and image width and height are important scan settings.
What is the Input Resolution?
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When the scanner scans film it reads the image as a collection of dots. The relative density of these
dots is referred to as the "resolution." Since this is the input stage of the scanning process, this
resolution is referred to as the "input resolution." The illustration below shows the same image
scanned with different input resolutions.
Film Resolution
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• Resolution is measured in units called dots per inch (dpi). This measures the number of dots contained in one
linear inch.
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• Each dot is assigned individual brightness and color values.
What is the Output Resolution?
The output resolution is the name used to describe the relative density of the dots that form an image
when it is reproduced after scanning. Printing an image on a printer, transmitting it as a fax or
displaying it on a monitor are examples of how a scanned image may be output.
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FilmGet FS User's Guide
Scanned at a Fine Input
Resolution
One Dot
Scanned at a Coarse Input
Resolution
One Dot